Question

13. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm. The radial gh the pump is constant at 2.5 m/s and the flow is radial at the pump inlet. The rotor vanes are curved back at exit at an angle of 40° to the tangent. If the outer diameter of the rotor is 500 mm and the blade width is 50 mm at exit, the tangential component of absolute velocity at rotor exit (in m/s) is 14 marks a. 32.2 b. 12.2 c. 18.2 d. 23.2 14. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm. The radial velocity through the pump is constant at 2.5 m/s and the flow is radial at the pump inlet. The rotor vanes are curved back at exit at an angle of 40° to the tangent. If the outer diameter of the rotor is 500 mm and the blade width is 50 mm at exit, the ideal head (in m) is 13 marks] a. 15.8 b. 20.4 c. 23.7 15. A centrifugal pump whose outer diameter is twice the inner diameter, runs at 600 rpm. The radial velocity through the pump is constant at 2.5 m's and the flow is radial at the pump inlet. The rotor vanes are curved back at exit at an angle of 40° to the tang ent. If the outer diameter of the rotor is 500 mm and the blade width is 50 mm at exit, the mass flow rate of water (in kg/s) is 4 marks b. 17.36 a. 196.3 d. 19.63 c. 173.6

Answer 1

U2 40 Van v위 .FKc_ 25x600一 Uİ_ ㅈDEN 才.85 mls 65 6 o InN lanyo Vu12 73 m/s

「ヅ icle upin生 IS구 ×12-73 1.81 mal-Sdlow mニ.ro